constrained control of power converters veaceslav spinu supervisor: prof.dr.ir. p.p.j. van den bosch...
TRANSCRIPT
Constrained Control of Power Converters
Veaceslav Spinu
Supervisor: prof.dr.ir. P.P.J. van den BoschCo-supervisor: dr. M. Lazar
Eindhoven University of Technology29 January 2014
You own dozens of power converters
Industrial applications
Reliability, Efficiency, Precision and Speed
Construction of a power converter and the role of control
Construction of a power converter and the role of control
MeasureAction
>100,000 times/second
Act
Control _+
Reference
What are the constraints and why they matter
- Safety constraints- Actuation constraints- Control structure constraints- Limited computation resources
Car X
DestinationX
X
Main research directions
• Fixed structure control
• Variable structure control
Fixed structure control
• Set theoretic methods– design a simple feedback
controller that satisfies constraints
• Reference governors– adapt the reference such
that the operation is safe
Variable structure control
• Model Predictive Control – optimal response– complex implementation
• Hybrid Polytopic Partition framework– hardware tailored– large domain of
operation
Main research results
• Constrained control can make converters: smaller, faster and more reliable.
• Limitations of previous solutions:–Disjoint synthesis of the control gain and the contractive set in set-theoretic methods–Exponential complexity increase of the explicit MPC–Small signal distortions with the implicit MPC
• Proposed solutions–Iterative expansion of the contractive set and control gain computation–HPP framework for hardware tailored control synthesis–Dual Mode MPC for high-precision applications
